公开(公告)号：EP1135858A4

公开(公告)日：2003-06-25

申请号：EP99958994

申请日：1999-11-12

申请人： QUESTECH INTERNAT INC

发明人： CHAN SAM E J ,  CHU KING SUM ,  CHURCH W EDWARD ,  KRAFFT RANDALL

IPC分类号： G06F3/02 ,  G05G1/10 ,  H01H13/02 ,  H01H13/14 ,  H01H13/702 ,  H03K17/94 ,  B32B3/00 ,  B32B5/16 ,  B32B7/14 ,  H01H9/00 ,  H01H9/26 ,  H01H13/70 ,  H03M11/00

CPC分类号： H01H13/702 ,  G05G1/105 ,  H01H2219/018 ,  H01H2221/07 ,  H01H2223/0345

摘要： Embodiments of a peripheral backlighting system for keyboards are shown and described, which include one or more light-emitting panels exterior to the keyswitches of the keyboard. The panels are preferably electroluminescent material and surround at least two sides, and preferably all sides, of the stem of a keyswitch or the space in which the stem slides up and down during use. Alternatively, the electroluminescent panel(s) may extend substantially continuously between and underneath a plurality of keyswitches. The panels extend closely adjacent to the stem or stem path, or under the keyswitch, to be as far under the key cap as possible without extending into the stem or cap of the keyswitch. The EL panels are preferably powered by the computer keyboard port, via voltage inverters. Preferably, the keyswitch is translucent or partially translucent, and the base plate over the EL panels, if any, is at least partially translucent or transparent. This way, the light from the light-emitting panels radiates upward through, and preferably around the outer surface of, the translucent keycaps, rather than up through an aperture or lightpipe in the center of the keycaps.

摘要翻译： 示出和描述了用于键盘的外围背光照明系统的实施例，其包括键盘的按键开关外部的一个或多个发光面板。 面板优选为电致发光材料并且围绕钥匙开关的杆的至少两侧，优选所有侧面或杆在使用期间上下滑动的空间。 或者，电致发光面板可以在多个钥匙开关之间和之下基本上连续地延伸。 面板紧挨着杆或杆路径延伸，或者在按键开关下方延伸到键帽尽可能远的下方，而不延伸到按键开关的杆或帽中。 EL面板优选经由电压逆变器由计算机键盘端口供电。 优选地，按键开关是半透明的或部分半透明的，并且如果有的话，EL面板上的基板至少部分半透明或透明。 这样，来自发光面板的光通过并且优选地围绕半透明键帽的外表面向上辐射，而不是穿过键帽中心的光圈或光导管。